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No. 753,085. PATENTED FEB. 23, 1904.

T. G. BENNETT & W. MASON. COMBINED PERCUSSION AND ELECTRIC PRIMER.

APPLICATION FILED NOV. 23, 1903.

Patented February 23, 1904.

Erica.

THOMAS G. BENNETT AND WILLIAM MASON, OF NEW HAVEN, CONNECTI- CUT,; ASSIGNORS TO WINCHESTER REPEATING ARMS CO., OF NEW IIAVEN, CONNECTICUT, A CORPORATION.

COMBINED PERCUSSION AND ELECTRIC) PRIMER- SPECIFICATION forming part of Letters Patent No. 753,035, dated February 23, 1904.

Application filed November 23, 1903. Serial No. 182,240. (No model.) A

To all whom it mag concern.-

Be it known that we, THOMAS G.,BENNETT and WILLIAM Mason, of New Haven, in the countyof New Haven and State of Connecti- 5 out, have invented a new and useful Improvement in a Combined Percussion and Electric Primer; and we do hereby declare the following, whentaken in connection with the accompanying drawing and the letters of refer- "o ence marked thereon, to be a full, clear, and

exact description of the same,.and which said drawing constitutes part of this specification, and represents a viewn longitudinal section of our improved primer.

5 Our inventionaelates to an improvement in that class of primers adapted to be fired either by percussion or by an electric current and v known in the art as combined percussion and electric primers, the object of the present in- :o vention being to produce a'strong, reliable,"

and sensitive primer, constructed with particular reference to preventing the rearward escape of gas through leakage or piercing.

With these ends inview our invention con- 5 sists in a combined percussion and electric primer having certain details of construction and, combination of parts, aswillbe hereinafter described, and pointed out in-the claims. As herein shown, our invention is'embodied .o in a'priinerin other respects closely-following the primer shown and described in- United States Patent No. 712,826, granted November 4,1902, to William Mason, one of these joint Reference, therefore, tothat pat S ent may be hadfor a fuller description'ofthe applicants.

details of the construction ofthe pr nnerrthan it seems necessary for us now give here; In carrying out our invention we employ a firing -plu-nger comprising a centrally -,ar-

ranged forwardly-projecting stem 2, anelasg tic annular fOIWSJddYr extending gas-check flange 3, surrounding the base of the said.

stem, which projects beyond it, a deep annular forwardly-opening gas-check chamber 4, anda heavy. impact-receiving head 5, having a flat impact receiving outer face. The said part is located in the bottom of the chamber 6 of a brass receiving-cup 7, which has a relatively thin bottom wall and corresponds to the receiving-cup shown and described in the said prior patent, except that it is longer than the same and has no forwardly-projecting firingboss. At its forward end the stem 2 passes through the central opening 8 of a primer sustaining or primer breeching washer 9, which is also located in the said chamber 6, the edge of its rear fac being abutted against ashoulder 10 formed therein. The forward end of the stem 2 rests upon a percussionprimer of any approved construction and comprising, as herein shown, an outercup 11, an.

inner cup 12, of thinner metal, containing the priming mixture 13, and an anvil 15. This primer is located within a cup-shaped anvilblock 16, corresponding 'to the anvil-block of the prior patent aforesaid, but shorter. The said block 16- is located within the chamberfi aforesaid and has its open or primer-receiving end breeched against the forward face of the primer-sustaining or primer-breeching washer 9. It is formed with a flash-hole 17, leading to the guncotton-18 of the electric primer, which may be of any approved construction, but which in the form shown herein is-so fully described in the said prior patent that itis unnecessary to reiterate that description here other than to say that it consists of several parts combined with a doubly-cupped non-conducting receiving-ring 19, which fits within the extreme forward end of the chamher 6 of the receiving-cup 7, from which a portion of the electric primer projects. From the gu ngotton 18 the fire passes through a flash-hole 20 to the powder 21 in a powder- ;oup 22, which is located within the forward end of the primer shell or body :23, the pow.- der being retained in place by a disk-shaped pow -wad 21*; held in place y a brass socalled crimp-washer 25, retained by a flange or crimp 26, formed by spinning or crimp- 'ing inwardly the beveled end or edge of the cess, and an impact-receiving head, aprimer- In testimony whereof we have signed this sustaining or primer-breechmgwasher located specification 1n the presence of two subscrib- IO wlthin the cup and having the said stem passed mg wltnesses.

throughit, a cup-shaped anvil-block breeehed THOMAS G. BENNETT. 5 against the said washer, a percussion-primer WILLIAM MASON. located within the said block and also breeched Witnesses:

against the said washer, and an electric primer DANIEL H. VEADER,

mounted in the forward end of the cup. H. F. BEEBE. 

